High memory usage on Avi controller due to GSLB processes

Products

• VMware Avi Load Balancer

Issue/Introduction

• The Avi controller nodes could experience high memory usage when a large-scale GSLB setup is configured.
• This could cause synchronization issues between the GSLB sites resulting in inconsistent GS service states across the cluster.

Cause

• The high memory usage is caused due to a memory leak in these GSLB processes - 'glb_remote_worker.service' and 'glb_local_worker.service'.
• The memory balancer fails to stop these GSLB processes when the controller memory threshold is hit.

Resolution

Fix:

• This issue is fixed in the 22.1.7-2p2 patch.

Workaround:

• The workaround is to perform a warm reboot on the controller cluster. 
• Please get in touch with Avi Support for assistance with performing the cluster warm reboot.